ui: optimize fps problem display

packages/ui-default/backendlib/markdown-it-xss.ts

@@ -75,12 +75,12 @@ export const xss = new Xss.FilterXSS({
     li: [],
     mark: [],
     ol: [],
-    p: [],
+    p: ['align', 'style'],
     pre: [],
     s: [],
     section: [],
     small: [],
-    span: ['class'],
+    span: ['class', 'style'],
     sub: [],
     summary: [],
     sup: [],
@@ -98,6 +98,16 @@ export const xss = new Xss.FilterXSS({
     var: [],
     video: ['autoplay', 'controls', 'loop', 'preload', 'src', 'height', 'width'],
   },
+  css: {
+    whiteList: {
+      'font-size': true,
+      'font-family': true,
+      'text-align': true,
+      'text-indent': true,
+      'margin-left': true,
+      color: true,
+    },
+  },
   allowCommentTag: false,
   stripIgnoreTagBody: ['script'],
   safeAttrValue(tag, name, value) {